Here is the full list of all 22 Say No! More achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Say "No!" 9999 times.
Say "No!" 99999 times.
Complete the story.
Complete chapter 7.
Complete chapter 6.
Say "No!" 999 times.
Become the Staring Contest Champion!
Complete chapter 5.
Let someone pay for parking tickets.
Complete chapter 4.
Complete chapter 3.
Complete chapter 2.
Deliver Grahams letter.
End ten encounters without saying No.
Win a Staring Contest Fight!
Complete chapter 1.
Make fun of 10 workers.
Play Alex' new video game.
Subscribe to the Coaches Channel.
Say "No!" 99 times.
Don't hurt the janitor imp!
Design your first character.